Bauxite consists of aluminum iron oxide and hydroxide and minerals (such as
boehmite, gibbsite, diasphore). It develops as a result of filtration and
washing of rocks which consists of aluminum silicate concretes secondarily
with rain under tropical conditions. They can be observed in green, brown,
red and grey colors.
Bauxite hardness of which changes between 1-7 in Mohs scale, intensity of which
changes between 2,5-4,5 gr/cm³ has an important role in world trade for being main
mine on production of aluminum metal. Bauxite is also used frequently in cement,
iron and steel, refractory and abrasive industry.
Known world Bauxite reserve is approximately 38 billion ton. Guinea has %23 of the
world reserve with 8.6 billion tons, Australia has %21 with 7.9 billion tons,
Vietnam has %14 with 5.4 billion tons and Brazil has biggest reserve with %7, 5.4
billion tons and rate.
Known bauxite reserve in Turkey is 68.910.000 tons according to MTA data. This number
constitutes pretty little part of world reserve as 0,001.8. %90 of bauxite mined in
world is used for production of aluminum and this increases in parallel with
aluminum demand. Production of bauxite has reached 350 billion ton in the world
since 2015.
Proved reserve in Demireller Mining A.Ş. bauxite areas is estimated as 8 million
tons, potential reserve is estimated as 16 million tons.
Demireller Mining Chemical Analysis Laboratory went into action in 2010. Chemical
analysis of various industrial ores particularly iron was started to be made as of
the inclusion of XRF Chemical Analysis Device to the system in 2011.
TECHNICAL INFORMATION
Production is carried out in our quarries using the open pit
method. Bauxite is processed and classified according to grain
size in our crushing-screening facilities located in
Arslanköy-Mersin, Muğla and Mihallıççık - Eskişehir. Our
products are shipped to customers from 4 different ports after
quality checks are carried out in our laboratory according to
customer demand.
Besides making any production according to demand, generally
production is made on granular size stated below:
GRAIN
0-10mm and 50+mm
10-50mm
0-10mm
Size
Alumina cement raw
material(CAC)
Slag improver in alumina production and iron
and steel blast furnaces
Alumina production and abrasive industry and
Portland cement additive raw material
Our bauxite is diasphore characterized and has chemical value
range stated below. Chemical analysis changes according to
granular size and place of production.